And then, press the Win key + R and enter the 'cmd', so you can bring the console like ahead.

Go to the location where you unzip the adb shell, and enter the following commands:

adb shell

wm density 520

Default pixel density is 640, and if it's modified like above, your screen will be more dense.

cf)

If you want change screen resoultion, enter the 'wm size widthxheight'. For example, if you want Full HD resoultion, enter the 'wm size 1080x1920'. By doing this, you need to set the appropriate pixel density also. notify this: